Here is a picture of a Reaver Daiklave that I made. Originally, I made a cardboard daiklave on a whim for Nick (pictured holding this one - he runs the long-running Exalted game I play in) because he was going to go to a costume party. In part, I made it because I was curious to find out just how large and unweildy these things would be.
The cardboard was less than satisfactory, however, and I soon began it obsessive project that is pictured below. You can't really see the grip on this thing, but it is over a foot long. The blade is over 4 feet long. It's made of spraypainted (and hand-carved) hardboard.
The whole thing is ridiculously heavy and would be near-impossible to actually use - which is unsurprising, really.